Howard Hawks wanted Albert R. Broccoli to work as an assistant director on the film, but when Howard Hughes heard it he said: "I can't give a good friend a job, the studio will be very upset with me!" But Hawks replied: "I want Cubby!" (Albert R "Cubby" Broccoli, who later became famous for the 'James Bond' films).
Film debut of Jane Russell. After the film was a success, she signed a seven-year contract with Howard Hughes, but then she found out he only wanted to use her in movies where she was scantily clad.
Howard Hughes employed his engineering skills to design a new cantilevered underwire bra to emphasize her figure. Hughes added curved structural steel rods that were sewn into the brassiere under each breast cup and connected to the bra's shoulder straps. This arrangement allowed the breasts to be pushed upward and the bra shoulder straps to be moved away from the neck, exposing more of her bosom. Contrary to many media reports afterward, Jane Russell did not wear the bra during filming; she said in her 1988 autobiography that the bra was so uncomfortable that she secretly discarded it. She wrote that the "ridiculous" contraption hurt so much that she wore it for only a few minutes, and instead wore her own bra. To prevent Hughes from noticing, Russell padded the cups with tissue and tightened the shoulder straps before returning to the set. She later said "I never wore it in The Outlaw, and he never knew. He wasn't going to take my clothes off to check if I had it on. I just told him I did." The famed bra ended up in a Hollywood museum-a false witness to the push-up myth.
Howard Hawks started as director but quit after two weeks, ostensibly to direct Sergent York (1941). However, Howard Hughes, who had the dailies flown to Los Angeles every day, had complained that Hawks was not spending enough time filming, which probably precipitated his leaving. Hughes took over as director in December 1940 and announced all scenes would be re-shot by Gregg Toland, who replaced the original cinematographer, Lucien Ballard. However, screenwriter Jules Furthman filled in for Hughes as director on 31 December 1940 and often thereafter.